How to Improve Pronunciation by Self-Study

intentional shadowing which I find to be more effective is that you do the shadowing but you focus on one or two elements that you're trying to improve. For example if you want to improve your R let's say you use the R sound or R and you want to switch it with the American R so when you shadow the person you pay close attention to the R sound. repetition is key for learners to improve pronunciation by self-study by themselves yes.